/ Dictionary / Index U U Thant: Meaning and Definition of Find definitions for: U Thant Pronunciation: (' thant', thont'). [key] 1909–74, Burmese statesman: secretary-general of the United Nations 1962–71. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Utgard-Loki Uther Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language